CVE-2024-40956 dmaengine: idxd: Fix possible Use-After-Free in irq_process_work_list

2024-07-1212:31:59

Linux

www.cve.org

linux kernel

dmaengine

vulnerability

resolved

EPSS

Percentile

5.1%

JSON

In the Linux kernel, the following vulnerability has been resolved:

dmaengine: idxd: Fix possible Use-After-Free in irq_process_work_list

Use list_for_each_entry_safe() to allow iterating through the list and
deleting the entry in the iteration process. The descriptor is freed via
idxd_desc_complete() and there’s a slight chance may cause issue for
the list iterator when the descriptor is reused by another thread
without it being deleted from the list.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/dma/idxd/irq.c"
    ],
    "versions": [
      {
        "version": "16e19e11228b",
        "lessThan": "1b08bf5a17c6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "16e19e11228b",
        "lessThan": "83163667d881",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "16e19e11228b",
        "lessThan": "faa35db78b05",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "16e19e11228b",
        "lessThan": "a14968921486",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "16e19e11228b",
        "lessThan": "e3215deca452",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/dma/idxd/irq.c"
    ],
    "versions": [
      {
        "version": "5.11",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.11",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.162",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.96",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.36",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9.7",
        "lessThanOrEqual": "6.9.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]